<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    .content {
      display: flex;
      justify-content: center;
      margin-top: 100px;
    }
    .weather {
      position: relative;
      display: inline-block;
      width: 180px;
      height: 240px;
      background: #23b7e5;
      border-radius: 8px;
      margin-left: 20px;
    }

    .sunny:before {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
      width: 60px;
      height: 60px;
      background: #F6D963;
      border-radius: 50%;
      box-shadow: 0 0 20px #ff0;
      z-index: 2;
    }

    .sunny:after {
      content: "";
      position: absolute;
      top: 50%;
      left: 50%;
      margin: -45px 0 0 -45px;
      width: 90px;
      height: 90px;
      background: #FFEB3B;
      clip-path: polygon(50% 0%,
          64.43% 25%,
          93.3% 25%,
          78.87% 50%,
          93.3% 75%,
          64.43% 75%,
          50% 100%,
          35.57% 75%,
          6.7% 75%,
          21.13% 50%,
          6.7% 25%,
          35.57% 25%);
      z-index: 1;
      animation: sunScale 2s linear infinite;
    }

    @keyframes sunScale {
      0% {
        transform: scale(1);
      }

      50% {
        transform: scale(1.1);
      }

      100% {
        transform: scale(1);
      }
    }

    .cloudy:before,
    .rainy:before,
    .snowy:before {
      content: "";
      position: absolute;
      top: 50%;
      left: 25%;
      transform: translate(-50%, -50%);
      width: 36px;
      height: 36px;
      background: #fff;
      border-radius: 50%;
      box-shadow:
        #fff 22px -15px 0 6px,
        #fff 57px -6px 0 2px,
        #fff 87px 4px 0 -4px,
        #fff 33px 6px 0 6px,
        #fff 61px 6px 0 2px,
        #ccc 29px -23px 0 6px,
        #ccc 64px -14px 0 2px,
        #ccc 94px -4px 0 -4px;
      z-index: 2;
    }

    .cloudy:before {
      animation: cloudMove 2s linear infinite;
    }

    @keyframes cloudMove {
      0% {
        transform: translate(-50%, -50%);
      }

      50% {
        transform: translate(-50%, -60%);
      }

      100% {
        transform: translate(-50%, -50%);
      }
    }

    .rainy:after {
      content: "";
      position: absolute;
      top: 50%;
      left: 25%;
      width: 4px;
      height: 14px;
      background: #fff;
      border-radius: 2px;
      box-shadow:
        #fff 25px -10px 0,
        #fff 50px 0 0,
        #fff 75px -10px 0,
        #fff 0 25px 0,
        #fff 25px 15px 0,
        #fff 50px 25px 0,
        #fff 75px 15px 0,
        #fff 0 50px 0,
        #fff 25px 40px 0,
        #fff 50px 50px 0,
        #fff 75px 40px 0;
      animation: rainDrop 2s linear infinite;
    }

    @keyframes rainDrop {
      0% {
        transform: translate(0, 0) rotate(10deg);
      }

      100% {
        transform: translate(-4px, 24px) rotate(10deg);
        box-shadow:
          #fff 25px -10px 0,
          #fff 50px 0 0,
          #fff 75px -10px 0,
          #fff 0 25px 0,
          #fff 25px 15px 0,
          #fff 50px 25px 0,
          #fff 75px 15px 0,
          rgba(255, 255, 255, 0) 0 50px 0,
          rgba(255, 255, 255, 0) 25px 40px 0,
          rgba(255, 255, 255, 0) 50px 50px 0,
          rgba(255, 255, 255, 0) 75px 40px 0;
      }
    }

    .snowy:after {
      content: "";
      position: absolute;
      top: 50%;
      left: 25%;
      width: 8px;
      height: 8px;
      background: #fff;
      border-radius: 50%;
      box-shadow:
        #fff 25px -10px 0,
        #fff 50px 0 0,
        #fff 75px -10px 0,
        #fff 0 25px 0,
        #fff 25px 15px 0,
        #fff 50px 25px 0,
        #fff 75px 15px 0,
        #fff 0 50px 0,
        #fff 25px 40px 0,
        #fff 50px 50px 0,
        #fff 75px 40px 0;
      animation: snowDrop 2s linear infinite;
    }

    @keyframes snowDrop {
      0% {
        transform: translateY(0);
      }

      100% {
        transform: translateY(25px);
        box-shadow:
          #fff 25px -10px 0,
          #fff 50px 0 0,
          #fff 75px -10px 0,
          #fff 0 25px 0,
          #fff 25px 15px 0,
          #fff 50px 25px 0,
          #fff 75px 15px 0,
          rgba(255, 255, 255, 0) 0 50px 0,
          rgba(255, 255, 255, 0) 25px 40px 0,
          rgba(255, 255, 255, 0) 50px 50px 0,
          rgba(255, 255, 255, 0) 75px 40px 0;
      }
    }
  </style>
</head>

<body>
  <div class="content">
    <!--晴-->
    <div class="weather sunny"></div>
    <!--阴-->
    <div class="weather cloudy"></div>
    <!--雨-->
    <div class="weather rainy"></div>
    <!--雪-->
    <div class="weather snowy"></div>
  </div>

</body>

</html>